Dog Kennel uses tenant-days as its measure of activity; an animal housed in the kennel for one day is counted as one tenant-day. During March, the kennel budgeted for 4,000 tenant-days, but its actual level of activity was 4,040 tenant-days. The kennel has provided the following data concerning the formulas used in its budgeting and its actual results for March: Data used in budgeting: Fixed element per month Variable element per tenant-day Revenue - $ 34.90 Wages and salaries $ 2,900 $ 7.90 Food and supplies 1,900 14.40 Facility expenses 8,400 3.40 Administrative expenses 6,900 0.40 Total expenses $ 20,100 $ 26.10 Actual results for March: Revenue $ 131,231 Wages and salaries $ 28,590 Food and supplies $ 60,575 Facility expenses $ 21,800 Administrative expenses $ 7,099 The revenue variance for March would be closest to: